Spindle drive



M. P. DURAND SPINDLE DRVE May 5, 1931.

Patented May 5, 1931 UNT STATES PATENT @FFCE SPINDLE DRIVE Application led June 2S, 1929, Serial No'.

This invention concerns improvements in means for driving the spindles of spinning machines and the like of the kind wherein each spindle is tangentially driven by a. beltat two diametrically opposite points. In accordance With the invention in arrangement of this character the belt is adapted to be normally forced on to the spindles by means of pairs of pressure rollers, each pair of rollers acting radially of one spindle. T his method of driving' oi'l'ers several advantages. For example, each spindle has an individual positive drive Without radial pressure on its bearing, the mechanism being' suited in particular to the use of asingle simple spring, not xed to the machine trame, ensuring' such balanced drive Whatever irregularities there may be in the belt-thickness. Moreover, the mechanism is readily adapted for uncouplingl and braking each spindle individually.

Other features will appear from the tollowing description which relates, by Way of example. to a bank of vertical spindles. Fig. 1 is an elevation and Fig. 2 a. sectional plan (the section being taken ou line 2 2 in Fig. l) of the driving belt common to a set of spindles and its tensioning' and longitudinal compensating); arrangement. The belts adapted to be driven from the same drum or shaft are also shown.

Fig'. 3 is an elevationand Fig. 4 a plan ot the individual spindle arrangement in coupled position.

Figs. 5 and`6 show in similar fashion the arrangement when uncoupled and bra'lred.

Figs. Y and 8 are diagrammatical views of modilications in certain details.

1 and 1 represent the end-supports of the trame, the intermediate siuiports and thread- WorkingV apparatus ofvrliich are not shown. The cylindrical pulleys 2 of one rectilinear set of spindles are disposed between the portionsoi' belts 3 or 3 Which touch them tangentially at diametrically opposite points 5" (Fig. 2). The belt 3, driven by a drum 4,

passes over a roller 5 carried by 1 to drive L one set ot spindles, and the belt 3 driven by the same drum and passing' over a roller 5 drives the second set shown. At the opposite end of the frame the belt 3 passes over 373,823, and in France August 17, 1928.

a roller 6 and return roller 7 carried by a carriage 8 sliding on a. guide 9, this alloW- ing regulation of the belt by manual operation of a screw 10 engaging a nut 11 rigid with the carriage or by automatic operation a of a chain 12 running over roller 13 and carrying Weight 14. A similar arrangement is provided tor the belt 3.

A modification is. hoWever, shown in Fig.

8 in connection with the belt 3. If the carriag'e 8 is moved from the position shown in full lines to that indicated in dotted lines,

i. c. a distance of, for example, 0.2 metre. the carriage in acting on tvvo portions of belt produces a longitudinal compensation of 0.40 metre. It noiv, by bringing the carriage back and passing the belt over the roller 15 on the support 1" as shown for the belt 3 the subsequent adjustment by the carriage Will act on four portions of the belt to permit a. compensation of 0.80 metre which, added to the previous adjustment, gives a total adjustment of 1.20 met-refor a carriage movement of 0.20 metre.

Clearly if it is not desired to have a large if' compensation or if it is required to place the tivo sets of pulleys at the same height one belt only need be employed. ln this case thev tvvo outer portions Will pass over the drum 4, the two inner portions over the rollers 5, 5 and at the other end of the frame loops are formed as indicated already 'for belt 3. yllhe tivo carriages could be combined and the roller 15 omitted.

lt it is desired to use only one drive shaft 16 and drive-pulley 1'4" for a trame too long to allenv the employment ot' a single belt, a drum 4 may be used atthe top to (drive one lli) Y or two other belts 18. 1S as shown in Fig. 8

extending' in a direction opposite to the belts 3, 3, the arrangement being' repeated it desired (as indicated at 4) to allow of further sets of spindles being y driven at diderent heights.

For coupling` the pulleys 2 each spindle is @l provided with its individual mechanism supported, for example, by a plate 19 rigid with the bearing 20 carrying the spindle 21. Two spindles 22, 22 risjid with 19` receive respec- Atively levers 23, 23 carrying idle rollers 24, -m'r'' cally 24 drawn towards one another by an arched spring 25, the t\vo portions of the belt 3 touchine` the pulley 2 being` thus held against said pulley by the rollers 2li, 24 to drive the saine in a perfectly balanced manner without any radial pressure on the bearing'. The spindles ot rollers 2l, 2l receive a radial pressure but this occurs under the best conditions of workin a'.

rEhe uneouplingi' is eliected by simultaneous separation of the rollers 2l, 24. Forthis purpose the levers 23, 23 carry arms 26, 26 connected together by a rod 27 and link 28, the latter beine` adapted to be acted upon by a linger This linger is disposed at the r j d with 19' and carrying` a Control lever 32 provided with a ina 33 sufficiently heavy to hold the arrangement in the oou'oled position when on the lett ot the vertical (Fig. 3) or in the uncoupled position when on the right Fie the rollers being;- then separated fend ot a shaft 30 passing;` through a boss 3l lroni the belt. This separation alone is not su'llicient to stop the pulley 2 completely, and the levers 23, 23 are therefore provided with lugis 3l. 3l adapted brake the pulley 2 vvlien the rollers arey separated to remove the pressure on the belt. There is thus obtained a. )raking and uncoupling that is rapid in action and requiringouljj,T a small etlort (the displacement of iv Aight 83 to the right troni a position only sliglitly'to the lett of the vertical) which 1nay,it desired, be supplied by any security device on the traine (stop inotion, calilprating device or the like) to obtain autoinatic stoppage of the individual spindle in incorrect conditions of operation.

Vlt is clear that the Jforni ot' construction given is only described by Way ot example and that may be ino di lie d Without exceeding` the scope ot the invention as defined by the following clainis.

i llilbat l claini is member on the spindle. a belt engaging said pulley at two dianietrically opposite points, a pair ot pressure rollers acting; radially of the pulley at diametrically opposite points, and iueans tor pressing said rollers on said belt.

@diene-.gaine each pnlley attivo diametri-Y ioints a Jair of )ressure l. i spindle Ydrive constituted by'a pulley rollers associated with each spindle and acting` radially thereof on the belt at diametrically opposite points, and a belt-adjusting carriage.

lVlARCEL PAUL DURAND.

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